Fighting in Ukraine's Donetsk Escalates to Heaviest in Months

Some of the heaviest fighting in months shook Donetsk early Sunday, hours after an unmarked convoy of weaponry and armed vehicles arrived in the eastern Ukrainian city. (Photo: AP)

This transcript has been automatically generated and may not be 100% accurate.

I ... thus I ... must shifting and early Sunday ... hours after on March convoys of weaponry and armed vehicles arrived in the eastern Ukrainian city ... the separatists links to news site registered in the name of the pro Russia activists traveled over as ... released a video on Sunday showing what it described as an artillery duel ... the Wall Street Journal has not independently verify this video ... the men are described as soldiers affiliated with it and that's the People's Republic ... Ukrainian forces and Russia backed rebels have been exchanging fire nearly every day since agreeing to a cease-fire in September ... that began fraying hours after it was signed ... now worries are mounting over a possible return to full-blown warfare ... a week after the rebels held elections that Ukraine and the West denounced as illegal ... according to the Associated Press ... more than eighty on Mark's military vehicles were reported on the roof in rebel controlled areas in eastern Ukraine ... indicating that intensified fighting me and I had ... it wasn't immediately clear if rebel forces were preparing a broader offensive or simply re equipping the continuing fight for disputed territories ... Ukrainian officials said this week they believed rebel forces had received substantial consignments of weaponry and manpower from Russia ... Moscow denied such claims ...